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Journal Article

Ecosystem‐based forecasts of recruitment in two menhaden species

Ethan Deyle; Amy M Schueller; Hao Ye; Gerald M Pao; George Sugihara
Fish and Fisheries · Vol. 19, Issue 5 · pp. 769-781 · 2018

Abstract

Gulf ( Brevoortia patronus , Clupeidae) and Atlantic menhaden ( Brevoortia tyrannus , Clupeidae) support large fisheries that have shown substantial variability over several decades, in part, due to dependence on annual recruitment. Nevertheless, traditional stock–recruitment relationships lack predictive power for these stocks. Current management of Atlantic menhaden explicitly treats recruitment as a random process. However, traditional methods for understanding recruitment variability carry the very specific hypothesis that the effect of adult biomass on subsequent recruitment occurs independently of other ecosystem factors such as food availability and predation. Here, we evaluate the predictability of menhaden recruitment using a model‐free approach that is not restricted by these strong assumptions. We find that menhaden recruitment is predictable, but only when allowing for interdependence of stock with other ecological factors. Moreover, while the analysis confirms the presence of environmental effects, the environment alone does not readily account for the complexity of menhaden recruitment dynamics. The findings set the stage for revisiting recruitment prediction in management and serve as an instructive example in the ongoing debate about how to best treat and understand recruitment variability across species and fisheries.

Bibliographic Information

JournalFish and Fisheries
PublisherWiley
Publication Date2018-09-01
Publication Year2018
Volume19
Issue5
Pages769-781
Document TypeJournal Article
Print ISSN1467-2960
eISSN1467-2979
DOI10.1111/faf.12287
SubjectGeneral Aquaculture, Fisheries & Fish Science

Access Information

NARA Access Coverage2000-01-01~Current
Journal Homepagehttps://onlinelibrary.wiley.com/loi/14672979
Publisher PageOpen Publisher Page
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